76 GL1000 Restoration
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Re: I did a thing...'76 GL1100 Restoration
After having gone through the parts bike and taking it apart, I've finally had a chance to start going through the boxes for the '76. I was extremely excited to see the quality of the parts that were in these boxes. Many of the chrome covers and pieces look almost new, whoever stored these parts in 1992 clearly spent a lot of time cleaning and polishing these parts before storing them. There are also several new pieces still sealed in bags, like all new clutch, accelerator, and choke cables. The original owner spent a lot of time carefully wrapping pieces and even left hand-written notes to identify the components and hardware.
I'm still not sure why this bike was taken apart at all. I'll have to go through the engine components closely to see if I can find what had initially failed.
I'll upload some pics if anybody is interested.
I'm still not sure why this bike was taken apart at all. I'll have to go through the engine components closely to see if I can find what had initially failed.
I'll upload some pics if anybody is interested.
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
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Re: I did a thing...'76 GL1100 Restoration
Well, I just learned that this block has been bored out, I believe .50 over. I was measuring the bores of the right case and found that they are about 72.40 mm instead of the standard 72. I haven't found any piston rings in all of these boxes, so I will need to find oversized piston rings.
It also doesn't look like these pistons have ever been used, because there is a '50' stamped on the top of the piston in ink which I doubt would still be there had they been run.
Comparison of oversized piston (left) vs. standard piston from parts engine:
Oversized piston with '50' stamped on top. I'm assuming this means that this is a .50 oversized piston:
Any thoughts on the benefits of using this oversized block? Would I be better of cleaning up the standard parts block to build?
It also doesn't look like these pistons have ever been used, because there is a '50' stamped on the top of the piston in ink which I doubt would still be there had they been run.
Comparison of oversized piston (left) vs. standard piston from parts engine:
Oversized piston with '50' stamped on top. I'm assuming this means that this is a .50 oversized piston:
Any thoughts on the benefits of using this oversized block? Would I be better of cleaning up the standard parts block to build?
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
- dontwantapickle
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- Location: Colorado
Re: I did a thing...'76 GL1100 Restoration
It's hard to speculate on what the previous owner was thinking, but yes that piston is new.
It might be a interesting project to try to re-assemble, but being a "basket case", TRUST ME....
something important is missing!
If it were me, I would investigate that 79 engine on the parts bike.
If it is in solid condition, I'd use all the best stuff in your pile to get it up and running.
it sounds like you might have all of the parts necessary to put together a really good engine
that will fit right in your 76 chassis.
It might be a interesting project to try to re-assemble, but being a "basket case", TRUST ME....
something important is missing!
If it were me, I would investigate that 79 engine on the parts bike.
If it is in solid condition, I'd use all the best stuff in your pile to get it up and running.
it sounds like you might have all of the parts necessary to put together a really good engine
that will fit right in your 76 chassis.
- gltriker
- Honored Life Member
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Re: I did a thing...'76 GL1100 Restoration
First thing, please change this Topic's title to- '76 GL1000 Restoration.Haleydr82 wrote: ↑Wed Sep 15, 2021 7:19 pm Well, I just learned that this block has been bored out, I believe .50 over. I was measuring the bores of the right case and found that they are about 72.40 mm instead of the standard 72. I haven't found any piston rings in all of these boxes, so I will need to find oversized piston rings.
It also doesn't look like these pistons have ever been used, because there is a '50' stamped on the top of the piston in ink which I doubt would still be there had they been run.
Comparison of oversized piston (left) vs. standard piston from parts engine:
Oversized piston with '50' stamped on top. I'm assuming this means that this is a .50 oversized piston:
Any thoughts on the benefits of using this oversized block? Would I be better of cleaning up the standard parts block to build?
If you need an OEM Honda GL1000 Shop Manual, here's a link:
http://www.goldwingworld.com/pages/GL10 ... manual.pdf
In Chapter 6 -Engine Lower End Repair- you will locate Standard size, piston-to-cylinder clearance dimensions.
--page 82 in the sidebar.
To answer your question, I personally would carry both crankcase halves and the .50 pistons (qty. 4 ) to a very reputable engine rebuilder and have them measure all 4 cylinders' bores, first. Get that important, will I or won't I, detail checked off the list.
Although I couldn't locate any adjusted dimensional information about 'oversizing' the cylinders' diameter for O.S. rings and O.S. pistons in the OEM Honda GL1000 Shop Manual, I would tend to think somewhere in Honda Technical Service Publication archives, technical data may have been printed for internal use at dealership level? Mr. Mike Nixon might know of a source?
Replacement parts reference. Part numbers and availability.
https://www.hondapartshouse.com/oempart ... aft-piston
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
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Re: I did a thing...'76 GL1100 Restoration
Thanks for the advice! I've already gone through the parts engine and taken it apart. I wanted to inventory the good parts that I'd be able to use and also better familiarize myself with the engine.dontwantapickle wrote: ↑Wed Sep 15, 2021 10:31 pm It's hard to speculate on what the previous owner was thinking, but yes that piston is new.
It might be a interesting project to try to re-assemble, but being a "basket case", TRUST ME....
something important is missing!
If it were me, I would investigate that 79 engine on the parts bike.
If it is in solid condition, I'd use all the best stuff in your pile to get it up and running.
it sounds like you might have all of the parts necessary to put together a really good engine
that will fit right in your 76 chassis.
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
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- Brass Member
- Posts: 33
- Joined: Tue Sep 01, 2020 1:06 am
Re: I did a thing...'76 GL1100 Restoration
Thanks Cliff! The topic has been updated, I completely missed that I wrote the wrong model in the subject, good catch.First thing, please change this Topic's title to- '76 GL1000 Restoration.
If you need an OEM Honda GL1000 Shop Manual, here's a link:
http://www.goldwingworld.com/pages/GL10 ... manual.pdf
In Chapter 6 -Engine Lower End Repair- you will locate Standard size, piston-to-cylinder clearance dimensions.
--page 82 in the sidebar.
To answer your question, I personally would carry both crankcase halves and the .50 pistons (qty. 4 ) to a very reputable engine rebuilder and have them measure all 4 cylinders' bores, first. Get that important, will I or won't I, detail checked off the list.
Although I couldn't locate any adjusted dimensional information about 'oversizing' the cylinders' diameter for O.S. rings and O.S. pistons in the OEM Honda GL1000 Shop Manual, I would tend to think somewhere in Honda Technical Service Publication archives, technical data may have been printed for internal use at dealership level? Mr. Mike Nixon might know of a source?
Replacement parts reference. Part numbers and availability.
https://www.hondapartshouse.com/oempart ... aft-piston
I like your idea of taking the block to an engine builder for measurement, that would give me quite a bit of piece of mind. I agree with your comments on adjusted dimensions, Is it just a matter of adding 0.5mm to the dimensions listed in the service manual?
I'll start calling around to see if I can find a shop capable of measurement the block, and perhaps giving it a good clean.
Last edited by Haleydr82 on Thu Sep 16, 2021 7:35 am, edited 1 time in total.
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
- Old Fogey
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Re: 76 GL1000 Restoration
If you decide to build one out of two, use the 79 geartrain and selector forks as there are improvements over the earlier engine.
"Impossible Is Just a Level of Difficulty!..."
If I'd wanted you to understand, I would have explained it better! (Johann Cruyff)
I’d give my right arm to be ambidextrous!
If I'd wanted you to understand, I would have explained it better! (Johann Cruyff)
I’d give my right arm to be ambidextrous!
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Re: 76 GL1000 Restoration
Oh really? that's great to know, thanks! I'm all for combining the engines to make the best configuration possible.
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
- Old Fogey
- Honored Life Member
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Re: 76 GL1000 Restoration
PM sent.
"Impossible Is Just a Level of Difficulty!..."
If I'd wanted you to understand, I would have explained it better! (Johann Cruyff)
I’d give my right arm to be ambidextrous!
If I'd wanted you to understand, I would have explained it better! (Johann Cruyff)
I’d give my right arm to be ambidextrous!
- pidjones
- SUPER BIKER!!!!
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Re: 76 GL1000 Restoration
Compare the bottom of the two frames closely. In '79 they added gussets to stregthen the cross member that the center stand mounts to.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped
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Re: 76 GL1000 Restoration
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
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- Brass Member
- Posts: 33
- Joined: Tue Sep 01, 2020 1:06 am
Re: 76 GL1000 Restoration
A bit of good news, I went by a couple of local machine shops this morning (one of them even recognized the Goldwing engine on sight!).
All of the cylinders are in good shape and within the expected size range (Less than the service limit + .5mm). There is a bit of surface rust on one of the cylinders, but it is not a concern and will clean up with a standard auto parts store honing tool.
Now I'm on the lookout for oversized rings. I see that Randakk's sells a kit with the rings, pistons, and wrist pins for $144. That's not a bad deal, but I'm hoping to find the rings alone.
All of the cylinders are in good shape and within the expected size range (Less than the service limit + .5mm). There is a bit of surface rust on one of the cylinders, but it is not a concern and will clean up with a standard auto parts store honing tool.
Now I'm on the lookout for oversized rings. I see that Randakk's sells a kit with the rings, pistons, and wrist pins for $144. That's not a bad deal, but I'm hoping to find the rings alone.
Dave
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
1982 Standard GL1100 - SOLD
1976 GL1000 Project Bike
2007 GL1800 Daily Rider
- wingrider
- SUPER BIKER!!!!
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Re: 76 GL1000 Restoration
It would take a little doing, but I bet you can find Hastings rings that will fit those pistons…
2002 1800 Wing
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
- wingrider
- SUPER BIKER!!!!
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Re: 76 GL1000 Restoration
May want to check this outfit out…total seal piston rings
You can pick the 1200cc civic engine, and get .50 over without much trouble.
You can pick the 1200cc civic engine, and get .50 over without much trouble.
2002 1800 Wing
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
2001 Valkyrie Interstate
1978 1200 EFI Wing with Motorvation Coupe Royale sidecar
1977 1200 Wing cafe/bobber project
1974 Suzuki GT550
- Rednaxs60
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Re: 76 GL1000 Restoration
rings from a 2000 Chevy tracer 1.6 Litre from Rock Auto. Have a set ion my 1200, used 1 mm oversize and adjusted the ring gap to suit - 0.6 mm (0.024"). Working well. Check these out. Standard size is 75.0 bore, there is also 0.5 mm and 1.0 mm oversize. Ring thickness is 1.2/1.2/2.5 mm (top/middle/oil scraper). Enginetech rings are made by Hastings I was told.
"When writing the Story of your life, don't let anyone else hold the pen."
Ernest
1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
2008 GL1800 (sold)
Ernest
1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
2008 GL1800 (sold)
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